Comments

No, no. Big nono. This could be a huge privacy breach if anyone was allowed to access the history of edited messages. Some servers already do it via bots and it can have a weird feeling knowing that the server mods are watching your messages being edited or deleted. I wouldn't want that feel to be expanded to the entirety of the server. So please no.

A yes to me. If people want privacy, they can delete their message and write it from the scratch. Edit history is convenient, and sometimes prevents someone from changing their whole message content agressively to get opposite reactions. This is a feature worth considering.